221112001012 has 24 divisors (see below), whose sum is σ = 446281109120. Its totient is φ = 93892906080.

The previous prime is 221112001009. The next prime is 221112001027. The reversal of 221112001012 is 210100211122.

It is a junction number, because it is equal to n+sod(n) for n = 221112000983 and 221112001001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36221064 + ... + 36227167.

Almost surely, 2^221112001012 is an apocalyptic number.

It is an amenable number.

221112001012 is an abundant number, since it is smaller than the sum of its proper divisors (225169108108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221112001012 is a wasteful number, since it uses less digits than its factorization.

221112001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72448351 (or 72448349 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221112001012 its reverse (210100211122), we get a palindrome (431212212134).

The spelling of 221112001012 in words is "two hundred twenty-one billion, one hundred twelve million, one thousand, twelve".